- 15 Feb, 2016 40 commits
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Sasha Levin authored
Signed-off-by:Sasha Levin <sasha.levin@oracle.com>
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Dan Streetman authored
[ Upstream commit a8a572a6 ] Remove the dst_entries_init/destroy calls for xfrm4 and xfrm6 dst_ops templates; their dst_entries counters will never be used. Move the xfrm dst_ops initialization from the common xfrm/xfrm_policy.c to xfrm4/xfrm4_policy.c and xfrm6/xfrm6_policy.c, and call dst_entries_init and dst_entries_destroy for each net namespace. The ipv4 and ipv6 xfrms each create dst_ops template, and perform dst_entries_init on the templates. The template values are copied to each net namespace's xfrm.xfrm*_dst_ops. The problem there is the dst_ops pcpuc_entries field is a percpu counter and cannot be used correctly by simply copying it to another object. The result of this is a very subtle bug; changes to the dst entries counter from one net namespace may sometimes get applied to a different net namespace dst entries counter. This is because of how the percpu counter works; it has a main count field as well as a pointer to the percpu variables. Each net namespace maintains its own main count variable, but all point to one set of percpu variables. When any net namespace happens to change one of the percpu variables to outside its small batch range, its count is moved to the net namespace's main count variable. So with multiple net namespaces operating concurrently, the dst_ops entries counter can stray from the actual value that it should be; if counts are consistently moved from one net namespace to another (which my testing showed is likely), then one net namespace winds up with a negative dst_ops count while another winds up with a continually increasing count, eventually reaching its gc_thresh limit, which causes all new traffic on the net namespace to fail with -ENOBUFS. Signed-off-by:
Dan Streetman <dan.streetman@canonical.com> Signed-off-by:
Dan Streetman <ddstreet@ieee.org> Signed-off-by:
Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by:
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Joe Jin authored
[ Upstream commit ca88ea12 ] Sometimes xennet_create_queues() may failed to created all requested queues, we need to update num_queues to real created to avoid NULL pointer dereference. Signed-off-by:
Joe Jin <joe.jin@oracle.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Wei Liu <wei.liu2@citrix.com> Cc: Ian Campbell <ian.campbell@citrix.com> Cc: David S. Miller <davem@davemloft.net> Reviewed-by:
Boris Ostrovsky <boris.ostrovsky@oracle.com> Signed-off-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
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Wei Liu authored
[ Upstream commit 32a84405 ] Originally that parameter was always reset to num_online_cpus during module initialisation, which renders it useless. The fix is to only set max_queues to num_online_cpus when user has not provided a value. Signed-off-by:
Wei Liu <wei.liu2@citrix.com> Cc: David Vrabel <david.vrabel@citrix.com> Reviewed-by:
David Vrabel <david.vrabel@citrix.com> Tested-by:
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Wei Liu authored
[ Upstream commit 4c82ac3c ] Originally that parameter was always reset to num_online_cpus during module initialisation, which renders it useless. The fix is to only set max_queues to num_online_cpus when user has not provided a value. Reported-by:
Johnny Strom <johnny.strom@linuxsolutions.fi> Signed-off-by:
Ian Campbell <ian.campbell@citrix.com> Signed-off-by:
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Ido Schimmel authored
[ Upstream commit 60a6531b ] We can't be within an RCU read-side critical section when deleting VLANs, as underlying drivers might sleep during the hardware operation. Therefore, replace the RCU critical section with a mutex. This is consistent with team_vlan_rx_add_vid. Fixes: 3d249d4c ("net: introduce ethernet teaming device") Acked-by:
Jiri Pirko <jiri@mellanox.com> Signed-off-by:
Ido Schimmel <idosch@mellanox.com> Signed-off-by:
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Ben Hutchings authored
[ Upstream commit 4ab42d78 ] Currently slhc_init() treats out-of-range values of rslots and tslots as equivalent to 0, except that if tslots is too large it will dereference a null pointer (CVE-2015-7799). Add a range-check at the top of the function and make it return an ERR_PTR() on error instead of NULL. Change the callers accordingly. Compile-tested only. Reported-by:
郭永刚 <guoyonggang@360.cn> References: http://article.gmane.org/gmane.comp.security.oss.general/17908Signed-off-by:
Ben Hutchings <ben@decadent.org.uk> Signed-off-by:
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Ben Hutchings authored
[ Upstream commit 0baa57d8 ] Compile-tested only. Signed-off-by:
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Eric Dumazet authored
[ Upstream commit 34ae6a1a ] When a tunnel decapsulates the outer header, it has to comply with RFC 6080 and eventually propagate CE mark into inner header. It turns out IP6_ECN_set_ce() does not correctly update skb->csum for CHECKSUM_COMPLETE packets, triggering infamous "hw csum failure" messages and stack traces. Signed-off-by:
Eric Dumazet <edumazet@google.com> Acked-by:
Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by:
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Rabin Vincent authored
[ Upstream commit 229394e8 ] On ARM64, a BUG() is triggered in the eBPF JIT if a filter with a constant shift that can't be encoded in the immediate field of the UBFM/SBFM instructions is passed to the JIT. Since these shifts amounts, which are negative or >= regsize, are invalid, reject them in the eBPF verifier and the classic BPF filter checker, for all architectures. Signed-off-by:
Rabin Vincent <rabin@rab.in> Acked-by:
Alexei Starovoitov <ast@kernel.org> Acked-by:
Daniel Borkmann <daniel@iogearbox.net> Signed-off-by:
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Eric Dumazet authored
[ Upstream commit 7aaed57c ] Ivaylo Dimitrov reported a regression caused by commit 7866a621 ("dev: add per net_device packet type chains"). skb->dev becomes NULL and we crash in __netif_receive_skb_core(). Before above commit, different kind of bugs or corruptions could happen without major crash. But the root cause is that phonet_rcv() can queue skb without checking if skb is shared or not. Many thanks to Ivaylo Dimitrov for his help, diagnosis and tests. Reported-by:
Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com> Tested-by:
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Karl Heiss authored
[ Upstream commit 03d84a5f ] Commit 1f718f0f ("bonding: populate neighbour's private on enslave") undoes the fix provided by commit c2edacf8 ("bonding / ipv6: no addrconf for slaves separately from master") by effectively setting the slave flag after the slave has been opened. If the slave comes up quickly enough, it will go through the IPv6 addrconf before the slave flag has been set and will get a link local IPv6 address. In order to ensure that addrconf knows to ignore the slave devices on state change, set IFF_SLAVE before dev_open() during bonding enslavement. Fixes: 1f718f0f ("bonding: populate neighbour's private on enslave") Signed-off-by:
Karl Heiss <kheiss@gmail.com> Signed-off-by:
Jay Vosburgh <jay.vosburgh@canonical.com> Reviewed-by:
Jarod Wilson <jarod@redhat.com> Signed-off-by:
Andy Gospodarek <gospo@cumulusnetworks.com> Signed-off-by:
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Neal Cardwell authored
[ Upstream commit 83d15e70 ] For tcp_yeah, use an ssthresh floor of 2, the same floor used by Reno and CUBIC, per RFC 5681 (equation 4). tcp_yeah_ssthresh() was sometimes returning a 0 or negative ssthresh value if the intended reduction is as big or bigger than the current cwnd. Congestion control modules should never return a zero or negative ssthresh. A zero ssthresh generally results in a zero cwnd, causing the connection to stall. A negative ssthresh value will be interpreted as a u32 and will set a target cwnd for PRR near 4 billion. Oleksandr Natalenko reported that a system using tcp_yeah with ECN could see a warning about a prior_cwnd of 0 in tcp_cwnd_reduction(). Testing verified that this was due to tcp_yeah_ssthresh() misbehaving in this way. Reported-by:
Oleksandr Natalenko <oleksandr@natalenko.name> Signed-off-by:
Neal Cardwell <ncardwell@google.com> Signed-off-by:
Yuchung Cheng <ycheng@google.com> Signed-off-by:
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Eric Dumazet authored
[ Upstream commit 3e4006f0 ] When first SYNACK is sent, we already hold rcu_read_lock(), but this is not true if a SYNACK is retransmitted, as a timer (soft) interrupt does not hold rcu_read_lock() Fixes: 45f6fad8 ("ipv6: add complete rcu protection around np->opt") Reported-by:
Dave Jones <davej@codemonkey.org.uk> Signed-off-by:
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Sasha Levin authored
[ Upstream commit 320f1a4a ] proc_dostring() needs an initialized destination string, while the one provided in proc_sctp_do_hmac_alg() contains stack garbage. Thus, writing to cookie_hmac_alg would strlen() that garbage and end up accessing invalid memory. Fixes: 3c68198e ("sctp: Make hmac algorithm selection for cookie generation dynamic") Signed-off-by:
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Nicolas Dichtel authored
[ Upstream commit 07b9b37c ] When a vxlan interface is created, the driver checks that there is not another vxlan interface with the same properties. To do this, it checks the existing vxlan udp socket. Since commit 1c51a915, the creation of the vxlan socket is done only when the interface is set up, thus it breaks that test. Example: $ ip l a vxlan10 type vxlan id 10 group 239.0.0.10 dev eth0 dstport 0 $ ip l a vxlan11 type vxlan id 10 group 239.0.0.10 dev eth0 dstport 0 $ ip -br l | grep vxlan vxlan10 DOWN f2:55:1c:6a:fb:00 <BROADCAST,MULTICAST> vxlan11 DOWN 7a:cb:b9:38:59:0d <BROADCAST,MULTICAST> Instead of checking sockets, let's loop over the vxlan iface list. Fixes: 1c51a915 ("vxlan: fix race caused by dropping rtnl_unlock") Reported-by:
Thomas Faivre <thomas.faivre@6wind.com> Signed-off-by:
Nicolas Dichtel <nicolas.dichtel@6wind.com> Signed-off-by:
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Francesco Ruggeri authored
[ Upstream commit 07a5d384 ] dst_release should not access dst->flags after decrementing __refcnt to 0. The dst_entry may be in dst_busy_list and dst_gc_task may dst_destroy it before dst_release gets a chance to access dst->flags. Fixes: d69bbf88 ("net: fix a race in dst_release()") Fixes: 27b75c95 ("net: avoid RCU for NOCACHE dst") Signed-off-by:
Francesco Ruggeri <fruggeri@arista.com> Acked-by:
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John Fastabend authored
[ Upstream commit 73c20a8b ] When a qdisc is using per cpu stats (currently just the ingress qdisc) only the bstats are being freed. This also free's the qstats. Fixes: b0ab6f92 ("net: sched: enable per cpu qstats") Signed-off-by:
John Fastabend <john.r.fastabend@intel.com> Acked-by:
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Rabin Vincent authored
[ Upstream commit 55795ef5 ] The SKF_AD_ALU_XOR_X ancillary is not like the other ancillary data instructions since it XORs A with X while all the others replace A with some loaded value. All the BPF JITs fail to clear A if this is used as the first instruction in a filter. This was found using american fuzzy lop. Add a helper to determine if A needs to be cleared given the first instruction in a filter, and use this in the JITs. Except for ARM, the rest have only been compile-tested. Fixes: 34805931 ("net: filter: get rid of BPF_S_* enum") Signed-off-by:
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Hannes Frederic Sowa authored
[ Upstream commit ff621985 ] [I stole this patch from Eric Biederman. He wrote:] > There is no defined mechanism to pass network namespace information > into /sbin/bridge-stp therefore don't even try to invoke it except > for bridge devices in the initial network namespace. > > It is possible for unprivileged users to cause /sbin/bridge-stp to be > invoked for any network device name which if /sbin/bridge-stp does not > guard against unreasonable arguments or being invoked twice on the > same network device could cause problems. [Hannes: changed patch using netns_eq] Cc: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by:
Eric W. Biederman <ebiederm@xmission.com> Signed-off-by:
Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by:
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willy tarreau authored
[ Upstream commit 712f4aad ] It is possible for a process to allocate and accumulate far more FDs than the process' limit by sending them over a unix socket then closing them to keep the process' fd count low. This change addresses this problem by keeping track of the number of FDs in flight per user and preventing non-privileged processes from having more FDs in flight than their configured FD limit. Reported-by: socketpair@gmail.com Reported-by:
Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Mitigates: CVE-2013-4312 (Linux 2.0+) Suggested-by:
Linus Torvalds <torvalds@linux-foundation.org> Acked-by:
Willy Tarreau <w@1wt.eu> Signed-off-by:
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Florian Westphal authored
[ Upstream commit 55285bf0 ] Dmitry reports memleak with syskaller program. Problem is that connector bumps skb usecount but might not invoke callback. So move skb_get to where we invoke the callback. Reported-by:
Dmitry Vyukov <dvyukov@google.com> Signed-off-by:
Florian Westphal <fw@strlen.de> Signed-off-by:
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Xin Long authored
[ Upstream commit 068d8bd3 ] In sctp_close, sctp_make_abort_user may return NULL because of memory allocation failure. If this happens, it will bypass any state change and never free the assoc. The assoc has no chance to be freed and it will be kept in memory with the state it had even after the socket is closed by sctp_close(). So if sctp_make_abort_user fails to allocate memory, we should abort the asoc via sctp_primitive_ABORT as well. Just like the annotation in sctp_sf_cookie_wait_prm_abort and sctp_sf_do_9_1_prm_abort said, "Even if we can't send the ABORT due to low memory delete the TCB. This is a departure from our typical NOMEM handling". But then the chunk is NULL (low memory) and the SCTP_CMD_REPLY cmd would dereference the chunk pointer, and system crash. So we should add SCTP_CMD_REPLY cmd only when the chunk is not NULL, just like other places where it adds SCTP_CMD_REPLY cmd. Signed-off-by:
Xin Long <lucien.xin@gmail.com> Acked-by:
Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by:
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Andrey Ryabinin authored
[ Upstream commit e459dfee ] ip6addrlbl_get() has never worked. If ip6addrlbl_hold() succeeded, ip6addrlbl_get() will exit with '-ESRCH'. If ip6addrlbl_hold() failed, ip6addrlbl_get() will use about to be free ip6addrlbl_entry pointer. Fix this by inverting ip6addrlbl_hold() check. Fixes: 2a8cc6c8 ("[IPV6] ADDRCONF: Support RFC3484 configurable address selection policy table.") Signed-off-by:
Andrey Ryabinin <aryabinin@virtuozzo.com> Reviewed-by:
Cong Wang <cwang@twopensource.com> Acked-by:
YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by:
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Vijay Pandurangan authored
[ Upstream commit ce8c839b ] Packets that arrive from real hardware devices have ip_summed == CHECKSUM_UNNECESSARY if the hardware verified the checksums, or CHECKSUM_NONE if the packet is bad or it was unable to verify it. The current version of veth will replace CHECKSUM_NONE with CHECKSUM_UNNECESSARY, which causes corrupt packets routed from hardware to a veth device to be delivered to the application. This caused applications at Twitter to receive corrupt data when network hardware was corrupting packets. We believe this was added as an optimization to skip computing and verifying checksums for communication between containers. However, locally generated packets have ip_summed == CHECKSUM_PARTIAL, so the code as written does nothing for them. As far as we can tell, after removing this code, these packets are transmitted from one stack to another unmodified (tcpdump shows invalid checksums on both sides, as expected), and they are delivered correctly to applications. We didn’t test every possible network configuration, but we tried a few common ones such as bridging containers, using NAT between the host and a container, and routing from hardware devices to containers. We have effectively deployed this in production at Twitter (by disabling RX checksum offloading on veth devices). This code dates back to the first version of the driver, commit <e314dbdc> ("[NET]: Virtual ethernet device driver"), so I suspect this bug occurred mostly because the driver API has evolved significantly since then. Commit <0b796750> ("net/veth: Fix packet checksumming") (in December 2010) fixed this for packets that get created locally and sent to hardware devices, by not changing CHECKSUM_PARTIAL. However, the same issue still occurs for packets coming in from hardware devices. Co-authored-by:
Evan Jones <ej@evanjones.ca> Signed-off-by:
Vijay Pandurangan <vijayp@vijayp.ca> Acked-by:
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David Howells authored
[ Upstream commit e7c87bef ] Don't strip leading zeros from the crypto key ID when using it to construct the struct key description as the signature in kernels up to and including 4.2 matched this aspect of the key. This means that 1 in 256 keys won't actually match if their key ID begins with 00. The key ID is stored in the module signature as binary and so must be converted to text in order to invoke request_key() - but it isn't stripped at this point. Something like this is likely to be observed in dmesg when the key is loaded: [ 1.572423] Loaded X.509 cert 'Build time autogenerated kernel key: 62a7c3d2da278be024da4af8652c071f3fea33' followed by this when we try and use it: [ 1.646153] Request for unknown module key 'Build time autogenerated kernel key: 0062a7c3d2da278be024da4af8652c071f3fea33' err -11 The 'Loaded' line should show an extra '00' on the front of the hex string. This problem should not affect 4.3-rc1 and onwards because there the key should be matched on one of its auxiliary identities rather than the key struct's description string. Reported-by:
Arjan van de Ven <arjan@linux.intel.com> Reported-by:
Andy Whitcroft <apw@canonical.com> Signed-off-by:
David Howells <dhowells@redhat.com> Signed-off-by:
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Konstantin Khlebnikov authored
[ Upstream commit 73204282 ] Helper radix_tree_iter_retry() resets next_index to the current index. In following radix_tree_next_slot current chunk size becomes zero. This isn't checked and it tries to dereference null pointer in slot. Tagged iterator is fine because retry happens only at slot 0 where tag bitmask in iter->tags is filled with single bit. Fixes: 46437f9a ("radix-tree: fix race in gang lookup") Signed-off-by:
Konstantin Khlebnikov <koct9i@gmail.com> Cc: Matthew Wilcox <willy@linux.intel.com> Cc: Hugh Dickins <hughd@google.com> Cc: Ohad Ben-Cohen <ohad@wizery.com> Cc: Jeremiah Mahler <jmmahler@gmail.com> Cc: <stable@vger.kernel.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
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Konstantin Khlebnikov authored
[ Upstream commit 12352d3c ] Sequence vma_lock_anon_vma() - vma_unlock_anon_vma() isn't safe if anon_vma appeared between lock and unlock. We have to check anon_vma first or call anon_vma_prepare() to be sure that it's here. There are only few users of these legacy helpers. Let's get rid of them. This patch fixes anon_vma lock imbalance in validate_mm(). Write lock isn't required here, read lock is enough. And reorders expand_downwards/expand_upwards: security_mmap_addr() and wrapping-around check don't have to be under anon vma lock. Link: https://lkml.kernel.org/r/CACT4Y+Y908EjM2z=706dv4rV6dWtxTLK9nFg9_7DhRMLppBo2g@mail.gmail.comSigned-off-by:
Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: <stable@vger.kernel.org> Signed-off-by:
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xuejiufei authored
[ Upstream commit c95a5180 ] When recovery master down, dlm_do_local_recovery_cleanup() only remove the $RECOVERY lock owned by dead node, but do not clear the refmap bit. Which will make umount thread falling in dead loop migrating $RECOVERY to the dead node. Signed-off-by:
xuejiufei <xuejiufei@huawei.com> Reviewed-by:
Joseph Qi <joseph.qi@huawei.com> Cc: Mark Fasheh <mfasheh@suse.de> Cc: Joel Becker <jlbec@evilplan.org> Cc: Junxiao Bi <junxiao.bi@oracle.com> Cc: <stable@vger.kernel.org> Signed-off-by:
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Eric Dumazet authored
[ Upstream commit d7ce3692 ] Some servers experienced fatal deadlocks because of a combination of bugs, leading to multiple cpus calling dump_stack(). The checksumming bug was fixed in commit 34ae6a1a ("ipv6: update skb->csum when CE mark is propagated"). The second problem is a faulty locking in dump_stack() CPU1 runs in process context and calls dump_stack(), grabs dump_lock. CPU2 receives a TCP packet under softirq, grabs socket spinlock, and call dump_stack() from netdev_rx_csum_fault(). dump_stack() spins on atomic_cmpxchg(&dump_lock, -1, 2), since dump_lock is owned by CPU1 While dumping its stack, CPU1 is interrupted by a softirq, and happens to process a packet for the TCP socket locked by CPU2. CPU1 spins forever in spin_lock() : deadlock Stack trace on CPU1 looked like : NMI backtrace for cpu 1 RIP: _raw_spin_lock+0x25/0x30 ... Call Trace: <IRQ> tcp_v6_rcv+0x243/0x620 ip6_input_finish+0x11f/0x330 ip6_input+0x38/0x40 ip6_rcv_finish+0x3c/0x90 ipv6_rcv+0x2a9/0x500 process_backlog+0x461/0xaa0 net_rx_action+0x147/0x430 __do_softirq+0x167/0x2d0 call_softirq+0x1c/0x30 do_softirq+0x3f/0x80 irq_exit+0x6e/0xc0 smp_call_function_single_interrupt+0x35/0x40 call_function_single_interrupt+0x6a/0x70 <EOI> printk+0x4d/0x4f printk_address+0x31/0x33 print_trace_address+0x33/0x3c print_context_stack+0x7f/0x119 dump_trace+0x26b/0x28e show_trace_log_lvl+0x4f/0x5c show_stack_log_lvl+0x104/0x113 show_stack+0x42/0x44 dump_stack+0x46/0x58 netdev_rx_csum_fault+0x38/0x3c __skb_checksum_complete_head+0x6e/0x80 __skb_checksum_complete+0x11/0x20 tcp_rcv_established+0x2bd5/0x2fd0 tcp_v6_do_rcv+0x13c/0x620 sk_backlog_rcv+0x15/0x30 release_sock+0xd2/0x150 tcp_recvmsg+0x1c1/0xfc0 inet_recvmsg+0x7d/0x90 sock_recvmsg+0xaf/0xe0 ___sys_recvmsg+0x111/0x3b0 SyS_recvmsg+0x5c/0xb0 system_call_fastpath+0x16/0x1b Fixes: b58d9774 ("dump_stack: serialize the output from dump_stack()") Signed-off-by:
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Harry Wentland authored
[ Upstream commit a9ebb3e4 ] Our PBN value overflows the 20 bits integer part of the 20.12 fixed point. We need to use 31.32 fixed point to avoid this. This happens with display clocks larger than 293122 (at 24 bpp), which we see with the Sharp (and similar) 4k tiled displays. Signed-off-by:
Harry Wentland <harry.wentland@amd.com> Cc: stable@vger.kernel.org Reviewed-by:
Alex Deucher <alexander.deucher@amd.com> Signed-off-by:
Dave Airlie <airlied@redhat.com> Signed-off-by:
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Harry Wentland authored
[ Upstream commit 64566b5e ] drm_fixp_from_fraction allows us to create a fixed point directly from a fraction, rather than creating fixed point values and dividing later. This avoids overflow of our 64 bit value for large numbers. drm_fixp2int_ceil allows us to return the ceiling of our fixed point value. [airlied: squash Jordan's fix] 32-bit-build-fix: Jordan Lazare <Jordan.Lazare@amd.com> Signed-off-by:
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Insu Yun authored
[ Upstream commit dabe1954 ] In drm_dp_mst_allocate_vcpi, it returns true in two paths, but in one path, there is no reference couting decrease. Signed-off-by:
Insu Yun <wuninsu@gmail.com> Cc: stable@vger.kernel.org Signed-off-by:
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Linus Walleij authored
[ Upstream commit 43c40349 ] This extra data line for high-speed MMC transfers was unrouted, set it up properly in the dtsi file. Signed-off-by:
Linus Walleij <linus.walleij@linaro.org> Signed-off-by:
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Mauro Carvalho Chehab authored
[ Upstream commit ac75fe5d ] That prevents this bug: [ 2382.269496] BUG: unable to handle kernel NULL pointer dereference at 0000000000000540 [ 2382.270013] IP: [<ffffffffa01fe616>] snd_card_free+0x36/0x70 [snd] [ 2382.270013] PGD 0 [ 2382.270013] Oops: 0002 [#1] SMP [ 2382.270013] Modules linked in: saa7134_alsa(-) tda1004x saa7134_dvb videobuf2_dvb dvb_core tda827x tda8290 tuner saa7134 tveeprom videobuf2_dma_sg videobuf2_memops videobuf2_v4l2 videobuf2_core v4l2_common videodev media auth_rpcgss nfsv4 dns_resolver nfs lockd grace sunrpc tun bridge stp llc ebtables ip6table_filter ip6_tables nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack it87 hwmon_vid snd_hda_codec_idt snd_hda_codec_generic iTCO_wdt iTCO_vendor_support snd_hda_intel snd_hda_codec snd_hwdep snd_hda_core snd_seq pcspkr i2c_i801 snd_seq_device snd_pcm snd_timer lpc_ich snd mfd_core soundcore binfmt_misc i915 video i2c_algo_bit drm_kms_helper drm r8169 ata_generic serio_raw pata_acpi mii i2c_core [last unloaded: videobuf2_memops] [ 2382.270013] CPU: 0 PID: 4899 Comm: rmmod Not tainted 4.5.0-rc1+ #4 [ 2382.270013] Hardware name: PCCHIPS P17G/P17G, BIOS 080012 05/14/2008 [ 2382.270013] task: ffff880039c38000 ti: ffff88003c764000 task.ti: ffff88003c764000 [ 2382.270013] RIP: 0010:[<ffffffffa01fe616>] [<ffffffffa01fe616>] snd_card_free+0x36/0x70 [snd] [ 2382.270013] RSP: 0018:ffff88003c767ea0 EFLAGS: 00010286 [ 2382.270013] RAX: ffff88003c767eb8 RBX: 0000000000000000 RCX: 0000000000006260 [ 2382.270013] RDX: ffffffffa020a060 RSI: ffffffffa0206de1 RDI: ffff88003c767eb0 [ 2382.270013] RBP: ffff88003c767ed8 R08: 0000000000019960 R09: ffffffff811a5412 [ 2382.270013] R10: ffffea0000d7c200 R11: 0000000000000000 R12: ffff88003c767ea8 [ 2382.270013] R13: 00007ffe760617f7 R14: 0000000000000000 R15: 0000557625d7f1e0 [ 2382.270013] FS: 00007f80bb1c0700(0000) GS:ffff88003f400000(0000) knlGS:0000000000000000 [ 2382.270013] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 2382.270013] CR2: 0000000000000540 CR3: 000000003c00f000 CR4: 00000000000006f0 [ 2382.270013] Stack: [ 2382.270013] 000000003c767ed8 ffffffff00000000 ffff880000000000 ffff88003c767eb8 [ 2382.270013] ffff88003c767eb8 ffffffffa049a890 00007ffe76060060 ffff88003c767ef0 [ 2382.270013] ffffffffa049889d ffffffffa049a500 ffff88003c767f48 ffffffff8111079c [ 2382.270013] Call Trace: [ 2382.270013] [<ffffffffa049889d>] saa7134_alsa_exit+0x1d/0x780 [saa7134_alsa] [ 2382.270013] [<ffffffff8111079c>] SyS_delete_module+0x19c/0x1f0 [ 2382.270013] [<ffffffff8170fc2e>] entry_SYSCALL_64_fastpath+0x12/0x71 [ 2382.270013] Code: 20 a0 48 c7 c6 e1 6d 20 a0 48 89 e5 41 54 53 4c 8d 65 d0 48 89 fb 48 83 ec 28 c7 45 d0 00 00 00 00 49 8d 7c 24 08 e8 7a 55 ed e0 <4c> 89 a3 40 05 00 00 48 89 df e8 eb fd ff ff 85 c0 75 1a 48 8d [ 2382.270013] RIP [<ffffffffa01fe616>] snd_card_free+0x36/0x70 [snd] [ 2382.270013] RSP <ffff88003c767ea0> [ 2382.270013] CR2: 0000000000000540 Cc: stable@vger.kernel.org Signed-off-by:
Mauro Carvalho Chehab <mchehab@osg.samsung.com> Signed-off-by:
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Takashi Iwai authored
[ Upstream commit 094fd3be ] In ALSA timer core, the active timer instance is managed in active_list linked list. Each element is added / removed dynamically at timer start, stop and in timer interrupt. The problem is that snd_timer_interrupt() has a thinko and leaves the element in active_list when it's the last opened element. This eventually leads to list corruption or use-after-free error. This hasn't been revealed because we used to delete the list forcibly in snd_timer_stop() in the past. However, the recent fix avoids the double-stop behavior (in commit [f784beb7: ALSA: timer: Fix link corruption due to double start or stop]), and this leak hits reality. This patch fixes the link management in snd_timer_interrupt(). Now it simply unlinks no matter which stream is. BugLink: http://lkml.kernel.org/r/CACT4Y+Yy2aukHP-EDp8-ziNqNNmb-NTf=jDWXMP7jB8HDa2vng@mail.gmail.comReported-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
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Takashi Iwai authored
[ Upstream commit ee8413b0 ] ALSA timer instance object has a couple of linked lists and they are unlinked unconditionally at snd_timer_stop(). Meanwhile snd_timer_interrupt() unlinks it, but it calls list_del() which leaves the element list itself unchanged. This ends up with unlinking twice, and it was caught by syzkaller fuzzer. The fix is to use list_del_init() variant properly there, too. Reported-by:
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Mauro Carvalho Chehab authored
[ Upstream commit e8beb023 ] The tda1004x was updating the properties cache before locking. If the device is not locked, the data at the registers are just random values with no real meaning. This caused the driver to fail with libdvbv5, as such library calls GET_PROPERTY from time to time, in order to return the DVB stats. Tested with a saa7134 card 78: ASUSTeK P7131 Dual, vendor PCI ID: 1043:4862 Cc: stable@vger.kernel.org Signed-off-by:
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Mathias Nyman authored
[ Upstream commit 5c821711 ] xhci driver frees data for all devices, both usb2 and and usb3 the first time usb_remove_hcd() is called, including td_list and and xhci_ring structures. When usb_remove_hcd() is called a second time for the second xhci bus it will try to dequeue all pending urbs, and touches td_list which is already freed for that endpoint. Cc: <stable@vger.kernel.org> Reported-by:
Joe Lawrence <joe.lawrence@stratus.com> Tested-by:
Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
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Lu Baolu authored
[ Upstream commit ccc04afb ] Intel Broxton M was verifed to require XHCI_PME_STUCK_QUIRK quirk as well. Cc: stable@vger.kernel.org Signed-off-by:
Lu Baolu <baolu.lu@linux.intel.com> Signed-off-by:
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